Automatic case lift



"Time 26, 1.923. f

R. A. ERsLEv AUTOMATIC CASE LIFT Filed Sept. 30 1921 2 Sheets-Sheet lJune 26, 1923. ll,459,722

' R. A. ERSLEV AUTOMATIC CASE LIFT Filed Sept. 30 1921 2 Sheets-Sheet 2Jaa? n A5501' y mmm Patented .lune 26, i923.

ROLF GE ERSLEV, OF COFENHAGEN-VALBY, DENMARK.

AUTOMATIC CASE LIFT.

Application led September 30, 1921. Serial No. 504,4?1.

T all 'whom z' may comm.'

Be it known that I, ROLF AAGE ERsLEv, a subject of the Kingdom ofDenmark, residing at Copenhagen-Valby, Denmark, have invented certainnew and useful Improvements in Automatic Case Lifts (for which I havefiled applications in Denmark, No. 2900, on Sept. 14, 1920; in Germany,No. 25,690, on Sept. 20, 1920; in Sweden, No. 4706, on Sept. 21, 1920),of which the following is a specification.

The invention hasffor its object an automatic case-lift provided withlift-chairs or platforms suspended in two endless chains l5 which bymeansgof chain wheels are moved with always the same speed. The chiefobject of the invention is to construct the caselift so, that the casesautomatically arrive into the lift-chairs without shocks and at theplace of discharge are automatically removed without shocks, so thatalso brittle goods for instance bottles may be automatically transportedfrom place to place.

This is obtained -by means of sliders,

which directly operated from the shafts of the chain-wheels arehorizontallyv reciprocated thereby carrying the cases into orwithdrawing them from the lift-chairs. A rocking-member directlyoperated from the chain-wheels is also provided. Said rocking-member hasfor its object to prevent untimely arrival of the cases to thelift-chairs and in the right moment to tilt the cases so much that aprojection or nose on the slider` can catch the cases.

A constructional form of the invention is illustrated on the drawing: j

Figure 1 is a side viewof the lift.

Figure 2 shows in a larger scale a plan view of the same,

Figures 3 and 4 are side views showing parts of the case supplying meansin the two different positions.

j Chain-wheels K which revolve with always the same speed move twoendless chains T in which the lift-chairs or platforms S1, S2. aresuspended.

Each of the shafts V of the chain-Wheels is provided with an arm orlever L, which,

by means of a connecting rod M, is connected to a slider N guided by aguide rod W, along which the slider reciprocates. The slider N isprovided with a projection or nose O, which at the place of supply drawsthe cases into the lift-chairs and at the place of discharge carries thecas'esout of the liftchairs. y f v The cases U, U1, U2, U3 areordinarily carried to and from the life over roller-tracks E or thelike. In continuance of the rollere0 tracks E grate-shaped bridges Z andY are provided respectively at the entrance and delivery-ends of thelift. The nose O of the lower slider N carries the cases on the lowerbrid e Z from which they by the lift-chairs e5 S1, 2 are lifted to andplaced on the upper bridge Y where they by the nose 0 of the upperslider N are carried to the upper roller-track E.

On the lower chain-wheel-shaft Y a cam 7o A is fixed, which co-acts witha roller in the end of a double-armed lever B pivoted at C the other endof which is connected to a pair of parallel rocking levers H (Fig. 2)pivoted at G by means of linksD. Said pair of levers forms arocking-member. rllhe inner end of each of the levers H is provided witha stopping nose F by which the cases are caught or an untimely arrivalof the cases to the lift-chairs is pref vented when said noses `are inthe position shown in Figure 3.

The distance between the lift-chairs S1, S2 suspended in the chains T issimilar to the circuit of each of the chain wheels K. Of course thesliders N will make a full reciprocating stroke for each arrival of alift-chair to the bridges Z and Y, so that the noses O of the sliders Nwill always be in catching position, 'when the lift-chairs pass thebridges Z and Y.

The described case-lift operates as follows:

The cases U1, U2, U3 are placed upon the lower roller-track E from whichthey are successivel carried on the lower bridge Z by the nose S of thelower slider N, which slides over the upper side of the case and engagesthe r'ear edge of said case see Fig. 4) when the case is tilted by therocking-member H, which is simultaneously rocked by the cam A to such aposition that the noses F are lowered and allow the foremost case U1 tobe drawn 0n the bridge Z when the slider Nmakes its return-stroke (seeFig. 1). Simultaneously the .rear edges of the rocking-member H preventthe advance of the following cases, so that the next case U2 first canbe pushed `forward to the operating eld of the slider-nose O when therocking member H is again brought in the position the bridge Z and carrythem to the bridge Y from which they are carried on the upper track E bythe upper slider N.

The described case-lift is only to be. considered 'as an example as thedetails of it may be varied in different ways. For instance a greaternumber of tracks E may be provided, one in each Hoor, which however onlycan be used alternatively.

By the described case-lift the following essential advantages areobtained. The directly operated slider prevents the casesv from beingsupplied to the lift at wrong times and also prevents- .cases from beingsupplied in distorted position or turned over and thereby disturb thelift. Further the rocking member prevents untimely supply of the casesand lifts their rear end, so that thefslider-nose can directly catch thecases.

By the improved means described the one or two workmen, who by the lmownlifts are necessary for control, can be dispensed with.

I claim:

1. An automatic case-lift including horizontal shafts carryingchain-wheels, endless chains passed around said wheels, lift-chairssuspended'insaid chains, horizontal tracks to and from the case-lift,horizontal reciproeating sliders operated by said chain-wheels androvided with noses for engaging cases, a roc ing-member for the tiltingof the cases directly operated by the chain-wheel shaft in -front of theentrance-track, and stoppingnoses on said rocking-member; substantiallyas and for the purpose specified.

2. An automatic case-lift including horiy arriving cases and to stop`the followingk cases, and stopping-noses on said rockingmember;substantially as and for .the purpose specified.

3. An automatic case-lift including horizontal shafts, chain-wheelsfixed to said shafts, endless chains passed around said wheels,lift-chairs suspended in said chains with intervals equal the circuit ofeach chain-wheel, horizontal tracks to and from the case-lift,horizontal reciprocating sliders operated by said chain-wheels Itoengage cases, a rocking-member, and means for operating saidrocking-member to tilt .the foremost of the arriving cases and to stopthe following; substantially as and for the purpose specified. i

In testimony whereof I aix m si n A, ROLF AAGZE ature. RS EV. Y

